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Something I picked up a while back when I was looking for information on some of the cast items on my Emco Compact 5 lathe is that ZAMAK is generally considered the same as MAZAK, which strictly

‘Quicksilver’ is the element Mercury I think? When I was a kid we used to play with stuff on the school lab bench top, whizzing little balls of it about. Not a particularly good idea, the phrase

I have cast small parts before using Zamak.? You can get the good stuff from electrical fittings, like flanges for thick wall tubing to cabinets or panels.? Plaster of Paris, Silicone spray mold

Yes, I remember watching that on the BBC. It was a great travesty that Harrison wasn’t awarded the prize, he had really won it fair and square. The clocks are things of incredible beauty, I’ve

You can cast Zamak at home. Find the recycled bodies of Kitchenaid stand mixers. They are made from Zamak 5 and it is a great alloy. Just melt it and cast it. It will be give you great results and no

Davis Johnson ( /g/Unimat/message/63338 ) 9:21am #63338 ( /g/Unimat/message/63338 ) "I see zink pest being bad two ways 1) Nice things get it and crumble. This is

Hi Gang: I was asked to repair a Lionel Best Friend of Charleston locomotive made in 2007, and the frame was falling apart from Zinc Pest. So even premier companies can fall victim to poor

I see zink pest being bad two ways 1) Nice things get it and crumble. This is what we are mostly discussing here. 2) If it not for 1 above these zinc alloys would be very attractive for home casting.

I like the highly optimistic reference to 1960 being the date after which zinc pest could be considered “largely free”. Presumably wicked casting fairies were all rounded up and locked in a high

While I cannot claim to know anything about this, and frankly would prefer to keep it like that, I found this article that may me of interest: https://en.wikipedia.org/wiki/Zinc_pest

Metal clocks also saw lots of contraptions to compensate for changes in temperature etc. One of those was the glass or quicksilver pendula clock where the pendula contained 3 adjacent glass containers

Excellent story! https://en.wikipedia.org/wiki/Longitude_(TV_series) Also available on U-tube. Carl.

Hi Gang: There was an early coastal survey done near Edisto Beach where they use a bi-metal rod to compensate for temperature. Carl.

Hello, There was a very good TV film called, IIRC, 'Longitude' staring Jeremy Irons, who's character? restores a Harrison timepiece, interspersed with an historic recreation of Harrison' own story..

There is also a construction scheme where the pendulum is made of parallel rods? with different thermal expansion coefficients, a gridiron pendulum. There may be other names for it. The appearance is

Great post! ?The stories of skilled artisans that changed the world thru their craft can be incredibly inspiring. I first learned of Harrison in the book, The Perfectionists by Simon Winchester, and

Peter, Thank you for the links it is interesting to read them and see the animations I found an article on the Model 18 tower clock made by the Seth Thomas Co very interesting, I am into clockmaking

Off topic but I came across this page a while back - wonderful animations of the working of John Harrison’s remarkable timepieces - which I thought some of you might enjoy.

I remember a while back I posted about my preference for cast iron Unimat components versus pot metal. The recent posts bear that out. Dick http://www.homemadetools.net/ forum/ OFF-

Hi Tamra: It toy train world there are stories of whole locomotives reduced to dust from Zinc Pest. Folks open the box to find the motor and axles all that is left. At what I call the "toy Factory"